Europium(III) oxide

Summary

Europium(III) oxide (Eu2O3), is a chemical compound of europium and oxygen. It is widely used as a red or blue phosphor in television sets and fluorescent lamps, and as an activator for yttrium-based phosphors. It is also an agent for the manufacture of fluorescent glass. Europium fluorescence is used in the anti-counterfeiting phosphors in Euro banknotes.[2]

Europium oxide
Eu2O3.powder.jpg
Identifiers
  • 1308-96-9 checkY
3D model (JSmol)
  • Interactive image
ChemSpider
  • 3441840 checkY
ECHA InfoCard 100.013.787 Edit this at Wikidata
  • 159371
UNII
  • 44642614WR checkY
  • DTXSID80152733 Edit this at Wikidata
  • InChI=1S/2Eu.3O checkY
    Key: RSEIMSPAXMNYFJ-UHFFFAOYSA-N checkY
  • InChI=1/2Eu.3O/rEu2O3/c3-1-5-2-4
    Key: RSEIMSPAXMNYFJ-NRICTGFVAC
  • O=[Eu]O[Eu]=O
Properties
Eu2O3
Molar mass 351.926 g/mol
Appearance white to light-pink solid powder
Odor odorless
Density 7.42 g/cm3
Melting point 2,350 °C (4,260 °F; 2,620 K)[1]
Boiling point 4,118 °C (7,444 °F; 4,391 K)
Negligible
+10,100·10−6 cm3/mol
Thermal conductivity 2.45 W/(m K)
Structure
Monoclinic, Cubic
Hazards
Lethal dose or concentration (LD, LC):
5000 mg/kg (rat, oral)
Safety data sheet (SDS) External MSDS
Related compounds
Other anions
Europium(III) chloride
Other cations
Samarium(III) oxide, Gadolinium(III) oxide
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Infobox references

Europium oxide has two common structures: Monoclinic (mS30, space group C2/m, No. 12) and cubic (cI80, space group Ia3, No. 206). The cubic structure is similar to that of manganese(III) oxide.

It may be formed by ignition of europium metal.

It can react with acids to form the corresponding europium(III) salts.

GalleryEdit

ReferencesEdit

  1. ^ Webelements Europium trioxide
  2. ^ "Europium and the Euro". Archived from the original on 2009-08-04. Retrieved 2009-06-04.